If sophisticated calculations are needed to justify an action, don't do it.
Without the right attitude, a business with everything going for it will fail.
Management capability is always less than the organization actually needs.
In getting good results team leaders become conductor rather than driver, enabling others to play the right music, not by hands-on domination of all decisions and execution, but by providing inspiration, motivation and stimulus.
Either an executive can do his job or he can't.
No executive devotes effort to proving himself wrong.